the.com/hibernation
the body's loophole around winter, where heartbeats drop and biology buys time on credit.
heart ratesome squirrels drop to a few beats per minute
no peeingbears recycle urine into protein for months
body temparctic ground squirrels chill below freezing and survive
not sleephibernators must occasionally wake to actually sleep
frog trickwood frogs freeze solid then thaw back alive